The world's two oldest commercial nuclear power stations, which are in Britain, are closing down on Sunday, the organisation which manages them said.
Dungeness A in Kent, south-east England, and Sizewell A in Suffolk, eastern England, both first generation Magnox nuclear power stations, are being decommissioned because they are less efficient than larger plants.
In addition, a reprocessing facility at Sellafield in Cumbria, north-west England, which is used to make spent fuel from the plants safe, is closing in 2012.
Dungeness A started generating electricity in 1965, while Sizewell A become fully operational the following year.
Together, they provided more than one percent of Britain's total generating capacity.
A spokesman for British Nuclear Group (BNG), which manages nuclear sites and their clean-up, said that some 99 percent of radioactive material would be removed within the next three years and taken to Sellafield.
But final site clearance will take more than a century and is expected to be completed in 2110.
The closures come as Britain strives to clean up its old nuclear sites with a programme which could cost up to USD 137, according to the Nuclear Decommissioning Authority.